TVLine has learned exclusively that the two-time Emmy winner will guest-star in the CBS drama’s Tuesday, March 27 episode as an AUSA (Assistant United States Attorney) whose proves to be a “hard-bitten” opponent for Dr. Jason Bull (played by Michael Weatherly).

“Bull comes up against AUSA Banner, a federal prosecutor who is bound and determined to imprison a young mother/physician who illegally purchases thousands of vials of marijuana-derived CBD oil to treat her patients in Virginia, where the oil is illegal,” previews executive producer Glenn Gordon Caron. “Her tenacity and seeming heartlessness baffles Bull.”